Papers, Addresses, Reports: Conservation Research Program of the Illinois Natural History Survey (Presidential Address); The Betatron; Excerpts from Lecture, "A Naturalist in the South Seas"; Extract from the Report of the Section Chairman...

Papers, Addresses, Reports: Evolution of Sex in the Mollusca (Address of the Retiring President); The 1937 Flood in Southern Illinois; Extract From the Report of the Section Chairman (Agriculture); Evening Schools for Adult Farmers; The Art and...

Papers, Addresses, Reports: The Development of Smokeless Fuel from Illinois Coal; The Irwin Expedition about Cerro de Pasco and Lake Titicaca; Preserves of Natural Conditions; Gaining and Losing Power; Report on the Progress and Condition of...

Papers, Addresses, Reports: Researches in life histories of parasites of wildlife (Address of the President); Hail damage to soybeans-report of 1943 results; Illinois forest future; Some developments in wartime agricultural production in...

Papers, Addresses, Reports: Early Pennsylvanian Microfaunas of the Illinois Basin; Record of Mississippi River Diversion in the Morton Loess of Illinois; Growth and Pigment Studies of Pullularia pullularts; Chemistry Education at the...

Papers, Addresses, Reports: Treasurer's Report; Resolutions Presented at the Elgin Meeting; Plant Communities of Glacier National Park, Montana; Mental Hygiene as a Problem of Public Health; The Year's Progress in Public Health and Medicine;...

Papers, Addresses, Reports: Available Energy; The "Who" in the High School Science Program; Training of Teachers for Tomorrow's World; Late Woodland occupations of the Fisher Site, Will County, Illinois; More data on Hopewell sites in Peoria...